Shut-Off Seat Valve With Leak Detector Nld Ntd by Inoxpa India Private Limited

Application: NLD/NTD shut-off valve is a pneumatically actuated sanitary single seat valve designed to detect product loss in case of the seal failure. Operating principleThe valve is pneumatically ac..

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Product Description

Application:
  • NLD/NTD shut-off valve is a pneumatically actuated sanitary single seat valve designed to detect product loss in case of the seal failure.
  • Operating principle
  • The valve is pneumatically actuated by means of compressed air.
  • The valve is supplied with a NC single-acting pneumatic actuator, thus in case of air supply failure, the valve goes back to the safety position (closed valve).
  • The detector is installed as NO (normally open), so that when the valve is closed, it lets the product out, thus giving a signal of leakage.
  • The seat is provided with two gaskets, between which a safety or detection chamber with a direct outlet to the exterior via the detector is formed.
  • Compressed air must simultaneously be supplied to the actuator (to open the valve) and to the detector to close it and prevent any loss of product.
  • Small amounts of product may be lost at the moment of the valve actuation, an air flow regulator can be installed to synchronise the opening/closing times of the actuator/detector to minimise these losses.

Design and features:

  • Robust and compact design.
  • Normally closed valve standard version.
  • Weld connections (mm or inches).
  • Avalable sizes: DN 25/1" to DN 100/4".
  • Easy disassembly of internal parts by loosening the clamp fastener.
  • Open lantern to allow visual inspection of shaft sealing.
  • 360º adjustable body.

Options:

  • Gaskets: FPM.
  • Connections: DIN, Clamp, SMS, RJT, FIL-IDF, etc.
  • "Twin-Stop" actuator.
  • INOXPA control unit for the main actuator.
  • Position sensors in the main actuator.
  • Steam barrier (if shaft sterilisation is required).
  • Surface finish Ra ≤ 0,5 μm.
Materials:
  • Parts in contact with the product AISI 316L
  • Other St.St. parts AISI 304
  • Gasket EPDM according to FDA 177.2600
  • Internal surface finish Ra ≤ 0,8 μm
  • External surface finish bright polish

Product Specification

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